Flawless color grading, cinematic aspect ratios, careful sound mixing (Dolby Atmos reference quality), slow-burn pacing.
What remains constant is the formula: The studios that survive the coming decade will be those that recognize that "entertainment" is no longer a passive activity. Productions today must be shareable, analyzable (think fan theories on Reddit), and rewatchable.
Efficient budgets, fast pacing, heavy use of practical effects (especially in horror), global appeal.
